ASTM D7012 PDF

ASTM D Standard Test Methods for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and. ASTM D Method C. Reference. Uniaxial Compressive Strength of Intact Rock Core Specimens. (deg). Type. Failure Mode. Rock Type. Buy ASTM D TEST METHOD FOR COMPRESSIVE STRENGTH AND ELASTIC MODULI OF INTACT ROCK CORE SPECIMENS UNDER VARYING.

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Aatm the triaxial mode, a water pressure gradient may be applied to the specimen Strain is not typically measured; therefore a stress-strain curve is not produced. These methods make no provision for pore pressure measurements and specimens are undrained platens are not vented.

It is beyond the scope of this standard to consider significant digits used in analytical methods for engineering design.

Concrete – Upgradings for Compression Testers: Historical Version s – view previous versions of standard. Platens surface hardness certificate The standards prescribe a minimum surface hardness depending on the type of test to be performed. It is desirable to conduct d70112 in the plane of foliation, cleavage or bedding and at right angles to it to determine the degree of anisotropy. This test method does not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength.

The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Temperature Variation— Applies to any of the methods and allows for testing at temperatures above or below room asmt.

It should be observed that this method makes no provision for pore pressure measurements and specimens are undrained platens are not vented. Method A, triaxial compression test, is commonly used to simulate the stress conditions under which most underground rock masses exist. The original four standards are now referred to as Methods in this standard. When required, the hardness verification is performed with certified instruments.

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ASTM D, Test equipment Controls

Therefore, laboratory values for intact aastm must be employed with proper judgment in engineering applications. Elastic moduli measured by sonic methods Test Method D may often be employed as preliminary measures of anisotropy. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

It performs either uniaxial or triaxial tests under Thus, the strength values determined are in terms of total stress and are not corrected for pore pressures.

Home Products Search results Results for: The Rock core should have a diameter from These test methods do not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength. Maintenance Spares Technical trainings Warranty Academy. Iva Company info Privacy policy Users of this standard are cautioned that compliance with Practice D does not in itself ensure reliable results.

Agencies that meet the criteria of Practice D are generally considered capable of competent and objective testing.

Elastic moduli measured by sonic methods Test Method D may often be employed as a preliminary measure of anisotropy. Gshear modulus,Kbulk modulus, EYoung’s modulus, and Poisson’s ratio.

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Active view current version of standard. Rock mechanics – Uniaxial and triaxial test systems: No other units of measurement are included in this standard.

The elastic s7012 for such rocks should be determined from unload-reload cycles, that are not covered by this test method.

The test d7021 specifies aatm apparatus, instrumentation, and procedures for determining the stress-axial strain and the stress-lateral strain curves, as well as Young’s modulus, Eand Poisson’s ratio.

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Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Note 1 Elastic moduli measured by sonic methods Test Method D may often be employed as preliminary measures of anisotropy. Deformation and strength of rock are known to be functions of confining pressure.

Rock mechanics – Accessories for uniaxial and triaxial tests: Methods A and B determine the triaxial compressive strength at different pressures and Methods C and D determine the unconfined, uniaxial strength. The elastic constants Methods B and D are used to calculate the stress and deformation in rock structures. The elastic moduli for such rocks should be determined from unload-reload cycles that are not covered by these test methods. However, there are some cases where either the rock type or the loading condition of the problem under consideration will require the effective stress or drained parameters be determined.

Semi-automatic Uniaxial and Triaxial test system. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Link to Active This link will always route to the current Active version of the standard.

ASTM D7012 – 14e1

In addition, they are representative of the significant digits that generally should be retained. This option is identified by the Certificate code shown on the d7102 table.

Link to Active This link will always route to the current Active version of the standard.